Dear all

I have 4 optic level sensors and I would really appreciatte some help to configure them

The first one is for auto top off and it's properly set up
The second one I would like to configure it to stop the return pump when the sump is almost empty in order not to burn it
The third one I would like to configure it to stop the return pump when the water achieve the level of the sensor to avoid overflow of the main tank (it's placed in the tank)
And the fourth one I would like to configure it to stop the skimmer when the water level of the sump is really high

I have two level plugs in my computer and two Y cables

I tried several options but without success

Thanks really much for your help

Bests
Ignasi